JP5364900B2 - Locking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking device capable of exerting a function by a simple constitution, and capable of unlocking a door without use of a key by temporary energization when necessary. <P>SOLUTION: This locking device A2 includes an operation-type locking/unlocking mechanism A3 which puts objects such as the door 133 and a body into a locked state by a locking operation using the key 31, and an automatic unlocking mechanism A4 for releasing the locked state without use of the key 31. The automatic unlocking mechanism A4 comprises a solenoid 41 which has a plunger 411 returning itself to a predetermined locking position (L) and which makes the plunger 411 forcedly recede to an unlocking position during energization, and a plunger holding means 42 for holding the plunger 411 in the unlocking position against a self-returning force until the application of a holding release operation, even after the completion of a forced receding operation performed by the solenoid 41. The locked state can be released without use of the key 31 when the plunger 411 is in the unlocking position. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a locking device preferably used for locking disaster prevention cabinets, lockers and the like.

  2. Description of the Related Art Conventionally, as a locking device provided in a furniture door or the like, a device having an operation type locking / unlocking mechanism that can be locked / unlocked using a key such as a card key or a metal key is well known (for example, , See Patent Document 1).

  This type of locking device cannot be unlocked when the key is lost or when the person who owns the key is absent. For this reason, various types of unlocking mechanisms of the second system have been developed so that the second system unlocking mechanism can be operated with another key at the time of inspection or the like. Yes.

  However, the conventional one requires another key to operate the unlocking mechanism of the second system. Therefore, there is a problem that it is difficult to apply to fixtures that assume situations where unlocking is necessary in an emergency where it is difficult to find out who owns the key, or situations where many doors must be unlocked all at once. is there.

  In order to solve such a problem, it is conceivable that the unlocking mechanism of the second system is electrically operated so that the locked state can be released as necessary. However, since conventional electric locks and the like have a relatively complicated structure, if such a structure is applied to the second system unlocking mechanism as it is, the number of components increases even though the mechanism is less frequently used. The problem that it is difficult to implement occurs.

JP 2008-008081 A

  The present invention is intended to solve the above-described problems, can function with a simple configuration, and can be unlocked without using a key by temporary energization when necessary. The object is to provide a locking device.

In order to achieve the above object, the present invention takes the following measures. That is, the locking device according to the present invention is configured such that an operation-type locking / unlocking mechanism that locks objects such as a door and a main body by a locking operation using a key, and the locked state can be released without using the key. And an automatic unlocking mechanism, wherein the automatic unlocking mechanism has a plunger that self-returns to a predetermined locking position, and the plunger is set to the unlocked position when energized. A solenoid forcibly retracting, and a plunger holding means for holding the plunger in the unlocked position against a self-returning force until a holding release operation is applied even after the forcible retracting operation by the solenoid is completed. It is assumed that the locked state can be released without using the key when the plunger is in the unlocked position.

  If it is a thing of such a structure, objects, such as a door and a main body, can be made into a locked state by adding locking operation to the said operation type locking / unlocking mechanism using a key. In this locked state, when the solenoid is energized, the plunger of the solenoid is forcibly moved from the locked position to the unlocked position, and the solenoid is switched to the unlockable state without using a key. Even if the power is turned off in this state, the plunger of the solenoid is held in the unlocked position by the action of the plunger holding means, so that the unlocked state or the unlockable state is maintained. If the holding state of the plunger is released by applying a holding release operation, the plunger self-returns to the locked position, and is reset to the initial state.

  Here, the operation-type locking / unlocking mechanism may be a mechanical lock or an electric lock. Therefore, the key is not limited to a so-called metal key, and may be a card key or a ten-key type.

In the present invention, the solenoid is arranged in a posture in which the plunger is suspended downward , and the plunger can be self-returned to the lock position by its own weight, and the number of parts can be reduced.

  The plunger holding means may be any means as long as it can hold the plunger moved to the unlocked position against the self-returning force in the locked position direction. What is held is preferable in order to simplify the configuration. When the plunger is held in the unlocked position by holding it with magnetic force or locking, the initial state is achieved by a simple holding release operation in which the plunger is temporarily biased in the lock position direction by an external force. It becomes possible to reset to. This holding release operation is not only an operation of directly applying a force to the plunger or the plunger holding means by hand, but also, for example, using a movement when operating the operation type locking / unlocking mechanism using the key. Various modes may be adopted depending on the purpose of use.

  As a preferable example of such a plunger holding means, it has a reset finger hook portion for returning the plunger moved to the unlocked position by energization to the lock position, and is engaged by operating the finger hook portion. And a leaf spring in which the plunger is self-returned to the locked position.

  As a specific aspect, the following first aspect or second aspect is conceivable.

  As a first aspect, the operation-type locking / unlocking mechanism is provided on one of both objects to be locked, and the automatic-type unlocking mechanism is provided on the other. A mechanical lock whose operating end operates in accordance with the used locking / unlocking operation, and a locking position provided at the operating end of the mechanical lock that directly or indirectly engages the plunger at the locked position by the locking / unlocking operation. And a lock body that operates until the unlocking position is released, so that the lock body cannot be engaged with the plunger when the plunger moves to the unlocked position. What is comprised is suitable.

  As a second aspect, the operation-type locking / unlocking mechanism and the automatic-type unlocking mechanism are provided on one of both objects to be locked, and the operation-type locking / unlocking mechanism includes a locking operation and an unlocking mechanism. It is configured so that it can be operated between the locking position where the lock body engages with the other object by the operation and the unlocking position where the engagement is released, and at least the locking operation is performed using a key. Preferably, when the plunger of the automatic unlocking mechanism is in the locked position, the plunger is configured to restrict the movement of the lock body of the operation type unlocking mechanism and prohibit the unlocking operation. It is.

In addition, as for what includes all the above aspects, and also includes an aspect in which the plunger also serves as a lock body, the locking device operates the lock body from the locking position to the unlocking position to perform locking and unlocking. A solenoid that self-returns to a predetermined locked position and forcibly retracts the plunger to an unlocked position when energized; against the return force will be and a plunger holding means for holding the unlocked position, the locked state when said plunger is in its unlocked position is configured so that it can be released without a key operation The solenoid is arranged in a posture in which the plunger is suspended downward, and the plunger self-returns to the locked position by its own weight. Unishi is something that can be considered.

  Since the present invention is configured as described above, it is possible to provide a locking device that can perform its function with a simple configuration and can be unlocked without using a key by temporary energization when necessary. Is.

1 is an overall perspective view showing a storage fixture according to an embodiment of the present invention. The perspective view which shows the solenoid unit which concerns on the same embodiment. The perspective view which expands and shows the principal part of the locking device of the embodiment. The disassembled perspective view which shows the bottom part of the storage fixture of the embodiment. The block diagram which shows typically the unlocking mechanism drive means of the embodiment. The perspective view which expands and shows the principal part of the locking device which concerns on the modification of the embodiment. The block diagram which shows typically the unlocking mechanism drive means of the modification. The perspective view which expands and shows the principal part of the locking device which concerns on the reference example of this invention . The perspective view which shows the dust box which concerns on the other modification of the embodiment. The perspective view which shows the dust box which concerns on the further another modification of the embodiment. The whole perspective view which shows the storage fixture which concerns on other embodiment of this invention. The principal part enlarged view explaining the action | operation of the locking device of the embodiment. The principal part enlarged view explaining the action | operation of the locking device of the embodiment. The perspective view which expands and shows the principal part of the door which concerns on the modification of the embodiment. The principal part enlarged view explaining the action | operation of the locking device of the modification.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, this embodiment is a dust box A100 in which a storage fixture is installed beside a vending machine, and an operation-type locking / unlocking mechanism A3 is attached to a door 133 that is one of both objects to be locked. And an automatic unlocking mechanism A4 is provided on the other storage fixture body A1. This dust box A100 has a dust inlet 11 at an intermediate portion, a dust storage area 12 is provided below the dust inlet 11, and a disaster storage area 13 is provided above the dust inlet 11. The storage fixture body A1 is provided. For example, a dust tray 121 is detachably accommodated in the dust storage area 12 of the storage fixture body A1, and a door 122 for inserting and removing the dust tray 121 can be opened and closed at the front opening of the dust storage area 12. Is provided. On the other hand, a shelf 131 and a belt-like member 132 for holding a long object are provided in the emergency supplies storage area 13 of the storage fixture main body A1. On the shelf 131, for example, emergency supplies, gloves, Equipment X1 such as protective glasses, a mask, a whistle, a radio, a standlight, a headlight, a hydraulic jack, a rope, and a helmet can be placed. Further, the strip-shaped member 132 for holding a long object is stored in a state where, for example, the flat loose bar X2, the tecobar X3, the hammer X4, and the like are held. A door 133 for inserting / removing disaster supplies such as the equipment X1 is provided at the front opening of the disaster supplies storage area 13 so as to be openable and closable. The door 133 is, for example, one side edge 133b hinged to the front edge portion of one side wall 14 of the storage fixture body A1 via a hinge (not shown), and the other side edge 133a of this door 133 and the storage fixture. A locking device A2 is provided between the other side wall 15 of the main body A1. The locking device A2 includes an operation type unlocking mechanism A3 and an automatic type unlocking mechanism A4. In addition, the doors 122 and 133 are provided with magnet catches (not shown), and a function of preventing the doors from being naturally opened is provided to prevent accidents.

  As shown in FIGS. 3 and 5, the operation type locking / unlocking mechanism A3 uses, for example, a mechanical lock 32 as a lock, and a mechanical lock in which the operating end 321 performs a locking / unlocking operation by an operation using the key 31. 32 and a rotating arm 322 which is provided at the operating end 321 of the mechanical lock 32 and operates between a locked position and an unlocked position. Specifically, the mechanical lock 32 is of, for example, a cylinder lock type, and the operating end 321 is rotated within a certain angle range by inserting the key 31 into the keyhole and performing a rotation operation. ing. The rotating arm 322 is attached to the operating end 321 of the mechanical lock 32, and the rotating end of the rotating arm 322 is engaged with the tip of the plunger 411 of the automatic unlocking mechanism A4. It is formed to do.

  As shown in FIGS. 3 and 5, the automatic unlocking mechanism A4 is provided so as to be operable between a locked position (L) and an unlocked position (U), and is provided with the locking position (L) by a self-returning force. A solenoid 41 that has a plunger 411 biased in the direction and forcibly retracts the plunger 411 to the unlocked position (U) upon energization, that is, when the disaster occurrence signal 6 is received, and the forced retraction operation by the solenoid 41 is completed After that, a plunger holding means 42 for holding the plunger 411 in the unlocked position (U) against the self-returning force until a holding release operation is applied is provided.

  Specifically, as shown in FIGS. 3 and 5, the solenoid 41 includes a plunger 411 and a solenoid body 412 that causes the plunger 411 to project and retract. The plunger 411 is a shaft having a flange portion 411a in the middle, and is arranged so that the shaft center 411b can be moved up and down. The plunger 411 is biased downward by its own weight that is a self-returning force. In addition, 411c is a slide hole for preventing an unbalanced load from being applied to the plunger 411. Reference numeral 411d denotes a plunger guide fixed to a solenoid unit main body 81, which will be described later. The plunger 411 is stably held at the lock position (L) which is the lowest point, and the plunger 411 is orthogonal to the axis 411b. This prevents the plunger 411 from moving sideways when a load in the direction is applied. The solenoid body 412 is composed of a cylindrical electromagnetic coil body that holds the upper half of the plunger 411, and can be raised to the unlocked position (U) against the dead weight when energized. It is what.

  As shown in FIGS. 3 and 5, the plunger holding means 42 is a leaf spring, and when the plunger 411 is raised to the unlocked position (U), the plunger holding means 42 is engaged with the flange 411 a, This is for holding the plunger 411 in the unlocked position (U). The plunger holding means 42 has a lower end attached to a back plate of a solenoid unit main body 81 to be described later, and a plunger 411 moved to the unlocked position (U) by energization at the other end. L) is provided with a reset finger hook portion 421 for returning to (L). That is, the upper half of the plunger holding means 42 is elastically deformed by using the moving force of the plunger 411 when the plunger 411 is raised from the locked position (L) to the unlocked position (U) by energization. As a result, the slide is temporarily moved to the retracted position. Thereafter, the flange 411a is held in a locked state by the plunger holding means 42 returned from the retracted position. On the other hand, when returning the plunger 411 from the unlocked position (U) to the locked position (L), the upper half of the plunger holding means 42 is forced to the retracted position by operating the finger hooking part 421. By moving, the locked state is released and the plunger 411 is self-returned to the lock position (L).

  At the bottom 16 of the storage fixture, as shown in FIGS. 1, 4 and 5, the seismic sensing device 5, which is a device that generates a disaster occurrence signal 6, is mechanically separated from the storage fixture main body A1. Is provided. That is, the bottom portion 16 of the storage fixture body A1 has a double wall structure including an inner bottom plate 161 and an outer bottom frame 162, and has an opening 162a at the center of the outer bottom frame 162. Yes. The seismic sensing device 5 is installed in a seismic device case 51 installed directly on the ground facing the opening 162a. The external bottom frame 162 is provided integrally with the storage fixture body A1. On the other hand, the inner bottom plate 161 is detachably attached to the outer bottom frame 162, and the seismic device 5 is inspected from the inside of the dust box A100 by removing the inner bottom plate 161 from the outer bottom frame 162. Be able to.

  The disaster occurrence signal 6 emitted from the seismic device 5 is transmitted to the unlocking mechanism driving means 7, and the automatic unlocking mechanism A4 is activated by the action of the unlocking mechanism driving means 7. That is, the unlocking mechanism driving means 7 includes a power source 71 such as a battery for supplying power to the solenoid 41 and a switching circuit 72 for intermittently supplying power by the power source 71, as schematically shown in FIG. And a determination circuit 73 that temporarily switches the switching circuit 72 to the energized state when the disaster occurrence signal 6 issued from the seismic sensing device 5 is received. In addition to the function of instructing the solenoid 41 to operate via the determination circuit 73 from the seismic sensor 5, the unlocking mechanism driving means 7 has a battery remaining capacity check function, battery remaining capacity limit measurement and solenoid forced It also has an operation function and an operation confirmation function after maintenance. Specifically, a mechanism for notifying the management center or the like that the remaining battery level is low, a mechanism for notifying the open / closed state of the door 133 to the outside of the dust box A100, and the like.

  2 and 3, the solenoid 41 and plunger holding means 42 constituting the automatic unlocking mechanism A4, and the power source 71 and the base unit 74 constituting the unlocking mechanism driving means 7 are composed of a solenoid unit main body. It is mounted on the back plate of 81 and unitized. Therefore, the automatic unlocking mechanism A4 can be attached in the positional relationship as described above by mounting the solenoid unit 8 in a predetermined position, specifically, on one side plate 14 of the storage fixture body A1. Yes. The solenoid unit main body 81 is provided with a release confirmation hole 82 for releasing the plunger holding means 42 and performing confirmation work.

  Next, the operation of the locking device A2 in the dust box A100 will be described.

  During normal times, the plunger 411 of the automatic unlocking mechanism A4 is de-energized, and the plunger 411 is stably held at the locked position (L) by its own weight as shown by the solid line in FIG. In this state, when the door 133 is closed and the key 31 is inserted into the key hole provided in the mechanical lock 32 of the operation type locking / unlocking mechanism A3 to perform the locking operation, the rotating arm 322 moves from the unlocking position to the locking position. The rotating end of the rotating arm 322 is engaged with the plunger 411. As a result, the door 133 is locked.

  When an earthquake with a seismic intensity of a certain level or higher in this state occurs, a disaster occurrence signal 6 emitted from the seismic sensing device 5 is transmitted to the unlocking mechanism driving means 7, and the switching circuit 72 is switched from OFF to ON so that the solenoid 41 Is energized. As a result, as indicated by a two-dot chain line in FIG. 5, the plunger 411 rises from the locked position (L) to the unlocked position (U), and the plunger 411 and the rotating arm 322 of the mechanical lock 32 The engagement is released. Therefore, it becomes possible to open the door 133 regardless of the state of the mechanical lock 32, and it becomes possible to use disaster prevention supplies such as the equipment X1 provided in the emergency supplies storage area 13.

  In this embodiment, after receiving the disaster occurrence signal 6, the plunger 411 that has moved up to the unlocked position (U) is held in the unlocked position (U) by the plunger holding means 42, so that energization is thereafter performed. Even if it is cut off, the plunger 411 does not return to the lock position (L), and the unlocked state of the door 133 is maintained.

  In addition, when an earthquake occurs and the door 133 is unlocked, an indication on the outer surface of the dust box A100 that disaster prevention goods are contained in the dust box A100 or that the disaster prevention goods in the dust box A100 can be used. Is set to be.

  In order to return the locking device A2 of the dust box A100 to the initial state after the disaster recovery, the plunger 411 is moved to the initial locked position (L) by performing a holding release operation such as applying an external force to the plunger 411 or the plunger holding means 42. Return to. For example, if the upper half of the plunger holding means 42 is slid by applying an operating force in the right direction to the finger hooking portion 421 provided on the plunger holding means 42, it is locked on the upper side of the plunger holding means 42. The locked state of the collar portion 411a held in this manner is released, and the plunger 411 is returned to the initial lock position (L) by its own weight.

  A modification of the embodiment will be described with reference to FIGS. In the following embodiments, components corresponding to the above embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  The door 133 in this modification is, for example, one in which the other side edge 133a is hinged to the front edge portion of one side wall 14 of the storage fixture body A1 via a hinge (not shown). A locking device A2 is provided between the other side wall 15 of the storage fixture body A1. The locking device A2 includes an operation type unlocking mechanism A3 and an automatic type unlocking mechanism A4.

  As shown in FIGS. 6 and 7, the operation type locking / unlocking mechanism A <b> 3 is provided on a mechanical lock 32 in which the operating end 321 performs a locking / unlocking operation by an operation using the key 31, and an operating end 321 of the mechanical lock 32. And a rotating arm 322 which is a lock body that operates between a locked position and an unlocked position. Specifically, the mechanical lock 32 is of, for example, a cylinder lock type, and the operating end 321 is rotated within a certain angle range by inserting the key 31 into a key hole (not shown) and performing a rotation operation. It has become. The rotating arm 322 is attached to the operating end 321 of the mechanical lock 32, and the rotating end of the rotating arm 322 is a hook engaged with the plunger 411 of the automatic unlocking mechanism A4. A portion 323 is formed.

  As shown in FIGS. 6 and 7, the automatic unlocking mechanism A4 is provided so as to be operable between a locked position (L) and a non-locked position (U). A solenoid 41 which has a plunger 411 biased in the direction and forcibly retracts the plunger 411 to the unlocked position (U) when the disaster occurrence signal 6 is received, and is retained even after the forced retracting operation by the solenoid 41 is completed Plunger holding means 42 is provided for holding the plunger 411 in the unlocked position (U) against the self-returning force until a release operation is applied.

  Specifically, as shown in FIGS. 6 and 7, the solenoid 41 includes a plunger 411 and a solenoid body 412 that causes the plunger 411 to project and retract. The plunger 411 is a shaft having a flange portion 411a in the middle, and is arranged so that the shaft center 411b can be moved up and down. The plunger 411 is biased downward by its own weight that is a self-returning force. Note that 411e stably holds the plunger 411 at the lock position (L) which is the lowest point, and when a load in a direction perpendicular to the axis 411b is applied to the plunger 411, the plunger 411 sideways. It is a stopper for preventing the above. The solenoid body 412 is composed of a cylindrical electromagnetic coil body that holds the upper half of the plunger 411, and can be raised to the unlocked position (U) against the dead weight when energized. It is what.

  The solenoid 41 is not limited to being placed vertically, but may be placed horizontally as shown in FIG. In this case, for example, the plunger 411 may be configured to be urged by the elastic force of the spring 45 provided inside the solenoid body 412 to return itself to the lock position (L).

  As shown in FIGS. 6 and 7, the plunger holding means 42 is a leaf spring, and when the plunger 411 is raised to the unlocked position (U), the plunger holding means 42 is engaged with the flange 411a, This is for holding the plunger 411 in the unlocked position (U).

  Next, the operation of the locking device A2 in the dust box A100 will be described.

  During normal times, the plunger 411 of the automatic unlocking mechanism A4 is de-energized, and the plunger 411 is stably held at the locked position (L) by its own weight as shown by the solid line in FIG. In this state, when the door 133 is closed and the key 31 is inserted into the key hole provided in the mechanical lock 32 of the operation type locking / unlocking mechanism A3 to perform the locking operation, the rotating arm 322 moves from the unlocking position to the locking position. Rotating, the hook portion 323 of the rotating arm 322 is engaged with the plunger 411. As a result, the door 133 is locked.

  When an earthquake with a seismic intensity of a certain level or higher in this state occurs, a disaster occurrence signal 6 emitted from the seismic sensing device 5 is transmitted to the unlocking mechanism driving means 7, and the switching circuit 72 is switched from OFF to ON so that the solenoid 41 Is energized. As a result, as indicated by a two-dot chain line in FIG. 6, the plunger 411 rises from the locked position (L) to the unlocked position (U), and the plunger 411 and the rotating arm 322 of the mechanical lock 32 are connected. The engagement is released. Therefore, it becomes possible to open the door 133 regardless of the state of the mechanical lock 32, and it becomes possible to use disaster prevention supplies such as the equipment X1 provided in the emergency supplies storage area 13.

  As still another modification, when the storage fixture is the dust box A100, for example, the modes shown in FIGS. 9 and 10 are also conceivable. That is, as shown in FIG. 9, the dust storage area 12 may be of a type in which the relatively heavy dust tray 121 is not taken in and out, and only the bag fixing frame 123 can be moved forward with a link structure. In such a case, instead of pulling out heavy contents to the front, only the mouth is taken out of the dust box A100, and then the contents are dragged out, so that the collection work can be reduced. Are better. Further, as shown in FIG. 10, the emergency supplies stockpiling region 13 may be provided with a steel hook 134 instead of the belt-like member 132. The hook 134 is configured to hold the flat rose bar X2 etc. on the partition panel and the other side plate 15, etc., and its shape is easy to take out during use, and the flat rose bar X2 etc. It is preferable that it does not jump out. Furthermore, the doors 122 and 133 may be opened to the right or left with respect to the opening / closing direction.

  Next, another embodiment of the present invention will be described with reference to FIGS.

  This embodiment is a case of a disaster prevention cabinet B100 in which a storage fixture is installed in a fixed state in an elevator or an office as shown in FIG. 11, and is operated on a door 19 which is one of both objects to be locked. A locking mechanism B3 and an automatic unlocking mechanism B4 are provided. The disaster prevention cabinet B100 includes a storage fixture body B1 for storing disaster prevention supplies therein, and a door 19 is provided at the front opening of the storage fixture body B1 so that the door 19 can be opened and closed. A locking device B2 is provided between the door 19 and the storage fixture body B1, and the locking device B2 includes an operation type unlocking mechanism B3 and an automatic type unlocking mechanism B4.

  As shown in FIGS. 12 and 13, the operation type unlocking mechanism B <b> 3 can operate from a locking position (l) for locking the door 19 to an unlocking position (u) for releasing the door 19. The locking body is a locking member 35 that is self-returned to the unlocking position (u) in an unloaded state, and the forging member 35 is forcibly moved to the locking position (l) by an operation using the key 34. A mechanical lock 36, a latch mechanism 37 that restrains the locking member 35 that has been moved to the locking position (l) to the locking position (l), and maintains the locked state. An emergency button 38 serving as a latch releasing means for self-returning the yoke member 35 to the unlocked position (u) is provided.

  Specifically, as shown in FIGS. 12 and 13, the pinning member 35 is inserted through a housing 39 containing the latch mechanism 37 so as to be able to advance and retreat, and has one end at the locking position (l). The door 19 is locked by engaging 351 with a slit 171 provided on the side wall 17 of the storage fixture body B1. Further, the yoke member 35 is urged in the unlocking position (u) direction by a spring (not shown) accommodated in the housing 39. A bracket 353 for transmitting force is attached to the other end portion 352 of the yoke member 35, and the mechanical lock 36 is provided in association with the bracket 353. The bracket 353 is fixed to the other end 352 of the pinning member 35, and has an upper engaging portion 353a that engages with the automatic unlocking mechanism B4 on the upper end side, and is associated with the mechanical lock 36 on the lower end side. It has a lower engaging part 353b.

  As shown in FIGS. 12 and 13, the mechanical lock 36 is of a cylinder lock type, for example, and the key 34 is inserted into a key hole (not shown) from the key insertion / removal position (Y) to the locking operation position (Z). The operating end 362 is rotated within an angle range of 90 degrees, for example, by rotating between them. A rotating arm 363 is attached to the operating end 362 of the mechanical lock 36. Specifically, when the operating end 362 of the mechanical lock 36 is in the key insertion / removal position (Y), the rotating arm 363 is separated from the lower engaging portion 353b, and the operating end 362 of the mechanical lock 36 is. Is operated from the key insertion / removal position (Y) to the locking operation position (Z), so that the pivoting arm 363 presses the lower engaging portion 353b of the bracket 353 and the unlocking member 35 is unlocked ( It can be moved from u) to the locking position (l).

  As shown in FIGS. 12 and 13, the latch mechanism 37 prohibits the movement of the pulling member 35 in the unlocking position (u) direction when the pulling member 35 reaches the locking position (l). When the emergency button 38 exposed on the front surface of the door 19 is pressed, it is configured to release the restraint on the piercing member 35, and the structure is normal, so that the explanation will be given. Omitted.

  As shown in FIGS. 12 and 13, the automatic unlocking mechanism B4 is provided so as to be operable between a locked position (L) and an unlocked position (U), and is provided with the locking position (L) by a self-returning force. A solenoid 43 forcibly retracting the plunger 431 to the unlocked position (U) when energized, that is, receiving the disaster occurrence signal 6, and the forced retracting operation by the solenoid 43 is completed. After that, a plunger holding means 44 for holding the plunger 431 in the unlocked position (U) against the self-returning force until a holding release operation is applied is provided.

  Specifically, as shown in FIGS. 12 and 13, the solenoid 43 includes a plunger 431 and a solenoid body 432 that causes the plunger 431 to project and retract. The plunger 431 is a shaft-like member provided with an unlocking prevention member 431a in the middle, and is arranged so that the shaft center 431b can be moved up and down. The plunger 431 is urged downward by its own weight that is a self-returning force. The plunger 431 stably holds the plunger 431 at the lock position (L), which is the lowest point, and the plunger 431 moves sideways when a load in a direction perpendicular to the axis 431b acts on the plunger 431. It is a stopper for preventing the above. The solenoid body 432 is formed of a cylindrical electromagnetic coil body that holds the upper half of the plunger 431, and can be raised to the unlocked position (U) against its own weight when energized. Is.

  As shown in FIGS. 12 and 13, the plunger holding means 44 is of a leaf spring shape and is engaged with the unlocking prevention member 431a when the plunger 431 is raised to the unlocked position (U). This is for holding the plunger 431 in the unlocked position (U). As indicated by a two-dot chain line in FIG. 14, when the plunger 431 is in the locked position (L), the unlocking prevention member 431a moves the unlocking member 35 in the unlocking position (u) direction. On the other hand, as shown by a solid line in FIG. 14, when the position is raised to the unlocked position (U), the blocking state is set so that it can be eliminated. That is, when the plunger 431 is in the locked position (L), the distal end portion of the unlocking prevention member 431a is positioned so as to block the advance / retreat path of the upper engaging portion 353a of the bracket 353, while the plunger 431 Is set to be retracted to a position deviated from the advancing / retreating path of the upper engaging portion 353a when the unlocking position (U) is raised. Therefore, it will switch to the state which can be unlocked, without using the key 34. FIG. The plunger holding means 44 is in the form of a leaf spring. When the plunger 431 is raised to the unlocked position (U), the plunger holding means 44 is engaged with the unlocking prevention member 431a and the plunger 431 is unlocked (U). It is for maintaining in a state where it can be unlocked and unlocked.

  On the bottom plate (not shown) of the disaster prevention cabinet B1, which is a storage fixture, a seismic device (not shown) that is a device that generates a disaster occurrence signal 6 is provided. The disaster occurrence signal 6 emitted from the seismic device is transmitted to the unlocking mechanism driving means 7, and the automatic unlocking mechanism B4 is activated by the action of the unlocking mechanism driving means 7. That is, the unlocking mechanism driving means 7 is similar to the one schematically shown in FIGS. 5 and 7, and the power supply 71 such as a battery for supplying power to the solenoid 43 and the power supply by the power supply 71 are intermittently provided. And a determination circuit 73 that temporarily switches the switching circuit 72 to an energized state when the disaster occurrence signal 6 emitted from the seismic sensing device 5 is received. In the present embodiment, the switching circuit 72 and the determination circuit 73 are accommodated in a base unit (not shown). The solenoid 43 and the plunger holding means 44 constituting the automatic unlocking mechanism B4, and the power source 71 and the base unit constituting the unlocking mechanism driving means 7 are mounted on a back plate (not shown) and unitized. The automatic unlocking mechanism B4 can be attached in the positional relationship as described above by mounting the back plate at a predetermined position.

  Next, the operation of the locking device B2 in the disaster prevention cabinet B100 will be described.

  During normal times, the power to the plunger 431 of the automatic unlocking mechanism B4 is cut off, and the plunger 431 is biased downward by its own weight. When the door 19 is open, as shown by a two-dot chain line in FIG. 12, the plunger 431 is provided with a holding release operation such as applying an external force to the plunger holding means 44 before closing the door. The lower end of the unlocking prevention member 431a thus held is stably held while abutting on the upper end portion of the upper engaging portion 353a. When the door 19 is closed from this state and the locking operation is performed by inserting the key 34 into the key hole provided in the mechanical lock 36 of the operation type locking / unlocking mechanism B3, the door 19 is held by the door 19 as shown by the solid line in FIG. The door member 19 is locked by engaging the slit member 171 formed in the side wall 17 of the storage fixture body B1. That is, first, when the key 34 is inserted into the key hole provided in the mechanical lock 36 and rotated to the locking operation position (Z), the rotating arm 363 rotates while pressing the lower engaging portion 353b of the bracket 353. The latch member 35 is moved from the unlocked position (u) to the locked position (l), and the latch member 37 is fixed to the locked position (l) by the latch mechanism 37. Thereafter, when the key 34 is returned to the key insertion / removal position (Y) and extracted, the pivot arm 363 returns to the initial position away from the lower engaging portion 353b of the bracket 353, and the locked state of the door 19 is maintained. Further, when the bracket 353 is moved by pressing the lower engagement portion 353b, the contact state between the upper engagement portion 353a and the unlocking prevention member 431a is released, and the plunger 431 is brought into the lock position (L) by its own weight. It is kept stable. In this state, even if the emergency button 38 is pressed by mischief, the operation of the pulling member 35 is blocked by the unlocking blocking member 431a of the solenoid 43, so that the locked state is maintained and the door 19 is moved. It will not open.

  When an earthquake with a seismic intensity of a certain level or more in this state occurs, a disaster occurrence signal 6 emitted from the seismic sensing device 5 is transmitted to the unlocking mechanism driving means 7, and the switching circuit 72 is switched from off to on to the solenoid 43. Energized. As a result, as shown by a solid line in FIG. 14, the plunger 431 is raised from the locked position (L) to the unlocked position (U), and the distal end portion of the unlocking prevention member 431a is moved from the advance / retreat path of the upper engaging portion 353a. It will evacuate to the position where it deviated. Therefore, if the emergency button 38 is pressed to release the latch mechanism 37, the pulling member 35 is automatically returned from the locked position (l) to the unlocked position (u), and the door 19 can be opened. The disaster prevention equipment provided in the disaster prevention cabinet B100 can be used.

  In this embodiment, after receiving the disaster occurrence signal 6, the plunger 431 that has risen to the unlocked position (U) is held in the unlocked position (U) by the plunger holding means 44. Even if it is cut off, the plunger 431 does not return to the lock position (L), and the unlocked state is maintained.

  In order to return the locking device B2 of the disaster prevention cabinet B100 to the initial state after the disaster recovery, the plunger 431 is moved to the initial locked position (L) by performing a holding release operation such as applying an external force to the plunger 431 or the plunger holding means 44. ). At the time of inspection, the unlocking prevention member 431a is forcibly raised by a second mechanical lock (not shown) such as a neodymium key, and the plunger 431 is moved from the locked position (L) to the unlocked position (U). Thus, the door 19 can be opened if the lock is released.

  A modification of the present embodiment will be described with reference to FIGS. 14 and 15. In the following embodiments, components corresponding to the above embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  The plunger 431 in this modification is urged downward by its own weight as a self-returning force, and is fixed to a slide hole 431c for preventing the plunger 431 from being applied with an unbalanced load and a back plate of a door (not shown). It has a plunger guide 431d for preventing the 431 from sideways.

  Further, as shown in FIGS. 14 and 15, the plunger holding means 44 in the present modification is a leaf spring-like one, and when the plunger 431 is raised to the unlocked position (U), the plunger holding means 44 is engaged with the flange portion 431 f. The plunger 431 is stopped and held in the unlocked position (U). The plunger holding means 44 has a lower end portion attached to a back plate of a door (not shown), and a plunger 431 that has been moved to the unlocked position (U) by energization at the other end portion to the locked position (L). A reset finger 441 for returning is provided. That is, the upper half of the plunger holding means 44 is elastically deformed using the moving force of the plunger 441 when the plunger 441 is raised from the locked position (L) to the unlocked position (U) by energization. As a result, the slide is temporarily moved to the retracted position. Thereafter, the flange portion 431f is held in a locked state by the plunger holding means 44 returned from the retracted position. On the other hand, when returning the plunger 441 from the unlocked position (U) to the locked position (L), the upper half of the plunger holding means 44 is forced to the retracted position by operating the finger hooking part 441. By moving, the locked state is released and the plunger 441 is self-returned to the lock position (L).

  Note that this modified example also has the same operation type locking / unlocking mechanism B3 and latch mechanism 37 as those in the above-described embodiment, but is omitted in FIGS. Further, the operation of the locking device B2 of the disaster prevention cabinet B100 at the time of the occurrence of the earthquake is also the same as that of the above-described embodiment, and the description thereof is omitted.

  In order to return the locking device B2 of the disaster prevention cabinet B100 to the initial state after the disaster recovery, the plunger 431 is moved to the initial locked position (L) by performing a holding release operation such as applying an external force to the plunger 431 or the plunger holding means. Return to. If the upper half of the plunger holding hand 44 is slid by applying an operating force in the right direction to the finger hooking portion 441 provided on the plunger holding means 44, it is locked and held on the upper side of the plunger holding means 44. The locked state of the flange portion 431f that has been performed is released, and the plunger 431 is returned to the initial lock position (L) by its own weight.

  Further, at the time of inspection, a secondary unlocking part 93 as shown in FIGS. 14 and 15 may be used. That is, an intermediate portion of the flange portion 431f, specifically, a return lever 91 whose lower end engages between the shaft center 431b of the plunger 431 and the plunger holding means 44, and the upper end of the return lever 91 can be rotated. And a secondary lock member 92 provided on the head. In such a case, when the secondary unlocking member 93 is inserted sideways into the gap between the door 19 and the fixture body B1, the secondary unlocking member 93 becomes secondary when the turning operation is performed. It will contact | abut to the lock member 92, and will be rotated until the secondary lock member 92 becomes horizontal. Therefore, the return lever 91 having the upper end connected to the secondary lock member 92 moves upward, and the locked state of the plunger 431 can be forcibly released. Therefore, it is possible to open the door 19 by releasing the lock by forcibly raising the unlocking prevention member 431a and moving the plunger 431 from the locked position (L) to the unlocked position (U). Become.

  The present invention is not limited to the embodiment described above.

  In the present embodiment, a device related to a fixture that receives a disaster signal when an earthquake occurs and opens the door is shown. However, the present invention is not limited to this. For example, a device that unlocks many doors such as lockers installed in a station or office at the same time. It may be. At this time, sending a signal for starting energization to the solenoid is not limited to a wired one. For example, the energization operation may be performed by sending a signal wirelessly from a physically separated administrative room or the like. Further, when the lock of the operation type locking / unlocking mechanism is locked, if it is configured to release the holding state of the plunger using the initial movement of the lock body of the operation type locking / unlocking mechanism in the locking direction, a large number of doors can be opened. Even with a locker, it is possible to perform the holding and releasing operation relatively easily.

  The plunger may also serve as a lock body. That is, both the objects to be locked may be unlocked by forcibly retracting the plunger from the locked position (locked position) to the unlocked position (unlocked position) when energized.

  The operation-type locking / unlocking mechanism is not limited to a mechanical type having a mechanical lock. For example, the operation-type locking / unlocking mechanism is controlled to move the operating body to a locking position and an unlocking position in response to a signal from an ID card held by an administrator. It may be an electric type that can lock and unlock the door.

  Further, the plunger holding means can be variously changed, for example, using a magnetic force by a permanent magnet, etc., as long as it can hold the plunger moved to the non-lock position against the self-returning force in the lock position direction. is there.

  Other specific configurations of each part can be variously modified without departing from the spirit of the present invention.

A2, B2 ... Locking device A3, B3 ... Operation type unlocking mechanism A4, B4 ... Automatic type unlocking mechanism 133, 19 ... Door 31, 34 ... Key 321, 362 ... Working end 41, 43 ... Solenoid 411, 431 ... Plunger 42, 44 ... Plunger holding means (plate spring)
421, 441 ... Finger hook (L) ... Lock position (U) ... Unlock position (l) ... Locking position (u) ... Unlocking position

Claims (6)

An operation-type locking / unlocking mechanism that locks objects such as a door and a main body by a locking operation using a key, and an automatic-type unlocking mechanism for allowing the locking state to be released without using the key; The automatic unlocking mechanism includes a solenoid that self-resets to a predetermined lock position and forcibly retreats the plunger to an unlocked position when energized, and a forcing by the solenoid. A plunger holding means for holding the plunger in the unlocked position against a self-returning force until a holding release operation is applied even after the retracting operation is completed, and the plunger is in the unlocked position The locked state can be released without using the key ,
2. A locking device according to claim 1, wherein the solenoid is arranged in a posture in which a plunger is suspended downward, and the plunger self-returns to a locked position by its own weight . The locking device according to claim 1 , wherein the plunger holding means is configured to lock and hold the plunger moved to the unlocked position by energization . The plunger holding means has a reset finger hook for returning the plunger moved to the unlocked position by energization to the lock position, and the locked state is released by operating the finger hook to lock the plunger. The locking device according to claim 2 , wherein the locking device is a leaf spring adapted to self-return to a position . The operation type locking / unlocking mechanism is provided on one of both objects to be locked and the other is provided with an automatic type unlocking mechanism, and the operation type locking / unlocking mechanism is used for a locking / unlocking operation using a key. A lock whose operating end is actuated accordingly, and an unlocking position where the engagement is released from the locking position which is provided at the operating end of the lock and which is directly or indirectly engaged with the plunger in the locking position by the locking and unlocking operation And a lock body that operates until the lock body is configured so that the lock body cannot engage with the plunger when the plunger moves to the unlocked position . The locking device according to 2 or 3. The operation-type locking / unlocking mechanism and the automatic-type unlocking mechanism are provided on one of both objects to be locked, and the operation-type locking / unlocking mechanism is locked to the other by the locking operation and the unlocking operation. It is configured to be able to operate from a locking position that engages the object to an unlocking position where the engagement is released, and at least the locking operation is performed using a key. 4. The structure according to claim 1, 2, or 3 , wherein when the plunger of the lock mechanism is in a locked position, the movement of the lock body of the operation type locking / unlocking mechanism is restricted by the plunger to inhibit the unlocking operation . Locking device. A locking device in which a locking body is operated between a locking position and an unlocking position to perform locking and unlocking, and has a plunger that self-returns to a predetermined locking position, and the plunger is set to an unlocked position when energized. A solenoid forcibly retracting, and a plunger holding means for retaining the plunger in the unlocked position against the self-returning force by engaging the solenoid after the forcibly retracting operation is completed. Is configured so that the locked state can be released without a key operation when is in the unlocked position,
The locking device according to claim 1, wherein the solenoid is arranged in a posture in which the plunger is suspended downward, and the plunger self-returns to a locked position by its own weight .

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